Pulse shape discrimination in helium-4 scintillation detectors

被引：7
作者：
Kelley, Ryan P. [1 ]
Enqvist, Andreas [1 ]
Jordan, Kelly A. [1 ]
机构：
[1] Univ Florida, Nucl Engn Program, Gainesville, FL 32611 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 830卷
关键词：
Gas Scintillation Detector; Neutron Detection; Pulse Shape Discrimination; Figure of Merit; DIGITAL DISCRIMINATION; GAMMA-RAYS; NEUTRONS;
D O I：
10.1016/j.nima.2016.05.065
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Three algorithms were investigated for discriminating between neutrons and gamma rays in a pressurized He-4 gas fast neutron detector: charge comparison, weighted integration, and neutron-gamma model analysis (NGMA). For each algorithm, a comprehensive pulse shape discrimination study was conducted using time-of-flight measurements, receiver operator characteristic curves, figure of merit performance measures, and a comparison of performance between Cf-252 and PuBe mixed neutron/gamma sources. The NGMA method was found to have the best overall performance by both the figure of merit and the receiver operator characteristic curve. The results also illustrated the high gamma rejection efficiency of these detectors, which is desirable in a variety of neutron monitoring applications. (C) 2016 Published by Elsevier B.V.
引用
收藏
页码：44 / 52
页数：9
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